US4782749A - Screw press with an actuator - Google Patents

Screw press with an actuator Download PDF

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Publication number
US4782749A
US4782749A US06/891,913 US89191386A US4782749A US 4782749 A US4782749 A US 4782749A US 89191386 A US89191386 A US 89191386A US 4782749 A US4782749 A US 4782749A
Authority
US
United States
Prior art keywords
screw spindle
screw
ram
actuator
flywheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/891,913
Other languages
English (en)
Inventor
Shigeo Iwasaki
Hiroshi Haguchi
Kengo Ujihara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsuishi Fukai Tekkosho KK
Original Assignee
Mitsuishi Fukai Tekkosho KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP60171093A external-priority patent/JPS6233098A/ja
Priority claimed from JP60171092A external-priority patent/JPS6233097A/ja
Application filed by Mitsuishi Fukai Tekkosho KK filed Critical Mitsuishi Fukai Tekkosho KK
Assigned to KABUSHIKI KAISHA MITSUISHI FUKAI TEKKOSHO reassignment KABUSHIKI KAISHA MITSUISHI FUKAI TEKKOSHO ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HAGUCHI, HIROSHI, IWASAKI, SHIGEO, UJIHARA, KENGO
Application granted granted Critical
Publication of US4782749A publication Critical patent/US4782749A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/16—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by fluid-pressure means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B30B1/23—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means operated by fluid-pressure means

Definitions

  • the present invention relates to a compaction apparatus utilizing an inertia force of a flywheel, and more particularly to a screw press.
  • the conventional friction press has a construction as shown in FIG. 5.
  • a screw spindle 31 is supported by a frame 30 through a female screw thereof so as to be moved up and down.
  • the screw spindle 31 is connected to a ram 34 at its lower end portion so the ram moves up and down along guide rails.
  • a punch 32 is mounted on a lower end of the ram 34 to conduct a compaction operation of the refractory brick in cooperation with a die 33 mounted on the frame.
  • a flywheel 35 mounted on an upper end portion of the screw spindle is a flywheel 35 on an outer periphery of which is provided a leather belt 36.
  • a pair of friction plates 39 are mounted on a counter shaft 38 which is driven by a motor 37.
  • the counter shaft 38 is slidably driven by an actuator 40 so that each of the friction plates 39 is alternately brought into contact with the flywheel 35, whereby the flywheel 35 is rotated in either a forward or reverse direction so as to move the screw spindle 38 up or down.
  • the material of the leather belt 36 which is usually cowhide reinforced with nylon, is not stable in quality.
  • the hide varies in length according to the weather variations.
  • the material changes in quality under the influence of frictional heat in a lengthy operation which causes the hide to break. Thus is is necessary for the operator to continually check the leather belt 36.
  • the leather belt 36 When the leather belt 36 is broken during operation, it is necessary to replace the broken belt with a new one immediately in order to avoid a serious accident. Consequently, the leather belt 36 is usually replaced at intervals of 20 to 30 days. However, even when this replacement is conducted, the operator may still be uncertain that the belt won't break. In addition, it is necessary for the operator to climb to the top section of the press every day before operation to check and tighten the leather belt 36, which requires extra time.
  • a screw press comprising a screw spindle rotatably mounted on a frame of the press.
  • a flywheel is mounted on an upper end of the screw spindle.
  • a ram is provided in the frame in a slidable manner.
  • a female screw is integrally mounted on the ram.
  • An actuator gives the ram a thrust parallel to an axis of the screw spindle, whereby the screw spindle, which is threadably connected to the female screw, is rotatably driven through an up-and-down movement of the ram.
  • It is another object of the present invention to provide a screw press comprising a female screw fixed to a frame of the press.
  • a screw spindle is threadably connected to the female screw.
  • a flywheel is mounted on an upper end of the screw spindle.
  • a ram is disposed under the screw spindle in a vertically slidably movable manner.
  • a punch is fixed to a lower portion of ram.
  • the improvement in press further comprises an actuator which produces a thrust in parallel to an axis of the screw spindle provided in the frame of the press.
  • a driving holder transmits axial thrust produced by the actuator to the screw spindle through a bearing.
  • the actuator of the screw press of the present invention may be a type of an actuator for moving a rod up or down, for example such as a hydraulic cylinder unit, a screw type power cylinder or the like.
  • the present invention is provided with the following features:
  • This type of the compaction press is a compound press in which there are combined: the impact force produced through the discharge of the rotation energy which is a feature of the friction press; and the stroke, pressing force and speed which are features of the hydraulic (or servo) unit together with its controllable properties. Consequently, such a compound press can perform a high density and high precise compaction operation.
  • FIG. 1 is a partially broken front sectional view of an embodiment of the present invention
  • FIG. 2 is a partially broken front sectional view of another embodiment of the present invention.
  • FIG. 3 is a sectional front view of further another embodiment of the present invention.
  • FIG. 4 is a sectional front view of a fourth embodiment of the present invention.
  • FIG. 5 is a partially broken sectional front view of a conventional friction press.
  • FIG. 1 shows a first embodiment of the present invention, which is a partially sectional front view of the embodiment.
  • Guide rails 2 are provided inside a frame 1 of a screw press of the present invention for slidably guiding a ram 3 of the press.
  • a punch 4 is fixed to a lower surface of the ram 3 for a compaction operation in cooperation with a die 41 which is provided in a lower portion of the fame 1.
  • a pair of rods 5 are mounted on an upper surface of the ram 3.
  • a piston 6, formed in an upper end of each of the rods 5, is inserted in a hydraulic cylinder 7 which is provided with a pressurized oil supplying port (not shown) at each of its upper and lower ends for receiving the pressurized oil supplied from a hydraulic pressure control unit for moving the piston 6 up or down using the pressurized oil.
  • a female screw holder 8 On an upper portion of the ram 3 is mounted a female screw holder 8 inside of which is held a female screw 9 which is threadably connected with a screw spindle 10 a lower end of which is inserted in a recess 11 formed in the ram 3.
  • An upper portion of the screw spindle 10 is supported by a thrust bearing 12 and a thrust bearing unit 13 so that the screw spindle can rotate. Consequently, even when the screw spindle 10 is subjected to upward or downward thrusts, the screw spindle 10 is not axially moved but instead only rotates about the bearing.
  • a flywheel 14 which accumulates a rotative kinetic energy supplied to the screw spindle 10. An amount of inertia moment of the flywheel 14 is determined by the design in consideration of the power requisite for conducting the pressing operation.
  • a cover 15 for covering the female screw holder 8 in order to prevent dust from entering a space between the female screw 9 and the screw spindle 10.
  • FIG. 1 shows a punch 4 in a resting position in which the punch 4 is upwardly separated from the die 41.
  • preparation for the compaction operation is completed by supplying the material to the die.
  • the hydraulic control unit (not shown) is actuated to supply the pressurized oil to the upper side of the cylinder 7 so that the piston is moved down, whereby the ram 3 is also moved down through the rod 5.
  • the female screw 9 is integrated with the ram 3, the female screw 9 is moved downward together with the ram 3 which forces the screw spindle 10 to rotate.
  • the torque of the screw spindle is received by the flywheel 14 and accumulated in the latter as rotational inertia energy of the spinning flywheel.
  • the inertial energy is instantaneously discharged and supplied to the punch 4 as an impact force as the spinning flywheel continues to rotate the spindle when a front end of the punch 4 reaches the die so that a high density compaction operation is performed.
  • the supply of the pressurized oil is shifted to the lower side of the hydraulic cylinder 7 so that the ram 3 is lifted to return to its resting position.
  • FIG. 2 is a front view of a second embodiment of the present invention, in which a part of the screw spindle 10 is shown in section.
  • the female screw 9 is fixed to a central portion of the frame 1 of the screw press of the present invention.
  • the female screw 9 has the screw spindle 10 inserted therein in a rotatable manner so as to be threadably connected to the female screw 9.
  • a large diameter portion 16 is formed in a lower end portion of the screw spindle 10.
  • the large diameter portion 16 is mounted in the ram 3 through a thrust bearing 17. Since the ram 3 is slidably engaged with the guide rails 2 provided inside the frame 1, the ram 3 is moved up or down according to the up-and-down movement of the screw spindle 10.
  • the punch 4 is mounted in a lower end of the ram 3.
  • a spacer 18 On an upper portion of the screw spindle 10 is mounted a spacer 18 through an inner lock nut 19.
  • the spacer 18 is interposed between a pair of bearings 20 the outer races of which are inserted in an inner bore of a driving holder 21 and fixed to the same holder 21 through an outer lock nut 22.
  • the driving holder 21 On opposite ends of the driving holder 21 are mounted a pair of rods 23 each of which is provided with a piston 24 in its central portion.
  • the frame 1 of the screw press is provided with hydraulic cylinders 25 in each of which is inserted the piston 24.
  • the hydraulic cylinder 25 In upper and lower ends of the hydraulic cylinder 25 are provided supplying ports 26, 27 of the pressurized oil which drives the piston 24 in the known manner.
  • the flywheel 14 is mounted on an upper end portion of the screw spindle 10.
  • the piston 24 is lifted to an upper end position of the cylinder 25, which position is the resting position for the screw press. Namely, the punch 4 is lifted together with the ram 3 so that the materials for the refractory brick is charged into the die 41.
  • the press is operated to supply the pressurized oil to an upper portion port 27 of the cylinder 25, whereby the piston 24 is moved downward so that the driving holder 23 is lowered through the rod 23.
  • the screw spindle 10 is forcibly moved downward. Since the screw spindle 10 is threadably connected with the female 9, the screw spindle 10 is rotatably driven so that the turning moment of the screw spindle 10 is accumulated in the flywheel 14 as a rotational moment of inertia.
  • FIG. 3 a third embodiment of the present invention shown in FIG. 3 relates to a compound press in which the screw press of the second embodiment of the invention is compounded with a hydraulic compaction unit.
  • the frame 1 of the compound press is provided with the guide rails 2 which support the ram 3 in a slidable manner.
  • the punch 4 In a lower end portion of the ram 3 is mounted the punch 4 which conducts the compaction operation in cooperation with the die 41.
  • a pair of the rods 5 are mounted on the ram 3.
  • the piston 6 provided in the rod 5 is inserted in the cylinder 7 provided in the frame 1. Consequently, by supplying the pressurized oil to the cylinder 7, it is possible to move the punch 4 downward to conduct the pre-pressing operation in cooperation with the die 41.
  • the female screw 9 is fixed to the upper central portion of the frame 1 and threadably connected with the screw spindle 10.
  • a lower end portion of the screw spindle 10 is engaged with the recess 11 formed in the upper surface of the ram 3.
  • An upper portion of the screw spindle 10 is mounted in the driving holder 21 through the bearing 26.
  • a pair of rods 23 are provided in the driving holder 21.
  • the piston 24 formed in the rod 23 is inserted in the hydraulic cylinder 25 provided in the frame 1.
  • the hydraulic ports 26, 27 are provided in the upper and lower ends of the hydraulic cylinder 25 to make it possible that the pressurized oil is selectively supplied.
  • the flywheel 14 is mounted on the upper end portion of the screw spindle 10.
  • the materials for the refractory brick are charged into the die 41 disposed under the frame 1, and then the pressurized oil is supplied to the upper portion of the cylinder 7 so that the ram 3 is moved downward to conduct a pre-pressing operation through the punch 4. After that, the pressurized oil is supplied to the port 27 so that the piston 24 is lowered, whereby the screw spindle 10 is moved downward through the driving holder 21 while being rotated. The rotation energy of the screw spindle 10 is accumulated in the flywheel 14.
  • the driving holder 21 is mounted on the upper portion of the screw spindle 10
  • the driving holder 21 in the lower portion of the screw spindle 10 as shown in FIG. 4.
  • the ram 3 is slidably supported by the frame 1.
  • the punch 4 is mounted in the lower end of the ram 3.
  • the piston 6, formed in the upper portion of each of the pair of the rods 5 which are embedded in the upper surface portion of the ram 3, is inserted in the cylinder 7 which is the cylinder for conducting the pre-pressing operation.
  • the female screw 9 mounted in the upper member of the fame 1 is threadably connected with the screw spindle 10.
  • the flywheel 14 On an upper end portion of of the screw press 10 is mounted the flywheel 14.
  • a large diameter portion 16 is formed in the lower end portion of the screw spindle 10.
  • the portion 16 is inserted in the recess of a pressing block 28.
  • An upper surface of the portion 16 is held by the thrust bearing 12.
  • a pair of rods 23 are embedded in the pressing block 28.
  • An upper end of each rod 23 is shaped into a piston 24 which is inserted in a cylinder 25.
  • the cylinder 25, acting as an actuator is provided inside the frame so that a driving force is applied to the lower end of the screw spindle 10, whereby it is it is possible to decrease the volume of the press and to make the maintenance thereof easy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
US06/891,913 1985-08-05 1986-08-01 Screw press with an actuator Expired - Fee Related US4782749A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP60-171092 1985-08-05
JP60171093A JPS6233098A (ja) 1985-08-05 1985-08-05 スクリユ−プレス装置
JP60-171093 1985-08-05
JP60171092A JPS6233097A (ja) 1985-08-05 1985-08-05 スクリユ−プレス装置

Publications (1)

Publication Number Publication Date
US4782749A true US4782749A (en) 1988-11-08

Family

ID=26493912

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/891,913 Expired - Fee Related US4782749A (en) 1985-08-05 1986-08-01 Screw press with an actuator

Country Status (8)

Country Link
US (1) US4782749A (it)
KR (1) KR940001028B1 (it)
CN (1) CN86104966A (it)
BR (1) BR8603707A (it)
CH (1) CH671729A5 (it)
DE (1) DE3626455A1 (it)
GB (2) GB2180192B (it)
IT (1) IT1197795B (it)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239212B (en) * 1989-12-22 1994-07-13 Ngai Shing Dev Limited Press
US6520077B1 (en) * 1999-03-31 2003-02-18 Aida Engineering Co., Ltd. Screw press
US6640601B2 (en) * 2000-12-27 2003-11-04 Sanyo Machine America Corporation Electric hemming press
US20040020379A1 (en) * 2002-08-01 2004-02-05 Balasu Mircea G. High capacity mechanical drive arrangement
WO2005005132A1 (fr) * 2003-07-10 2005-01-20 Shanghai Yunliang Forging Press Co., Ltd Presse a vis hydraulique
US20060283229A1 (en) * 2003-12-03 2006-12-21 Shoji Futamura Press
US20080264015A1 (en) * 2007-04-30 2008-10-30 Samsung Gwangju Electronics Co., Ltd Dust compressing apparatus of vacuum cleaner
CN105365246A (zh) * 2014-08-12 2016-03-02 张伟 电动螺旋压力机的同步传动机构
US20180290201A1 (en) * 2015-10-06 2018-10-11 Langenstein & Schemann Gmbh Shaping Device, in Particular a Spindle Press, and Method for Shaping Workpieces
US11090894B2 (en) * 2015-11-16 2021-08-17 United Arab Emirates University Metal chips compactor
PL441654A1 (pl) * 2022-07-05 2024-01-08 Politechnika Łódzka Prasa śrubowa

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPM882294A0 (en) * 1994-10-11 1994-11-10 Storay, Craig Francis Press improvements
WO2009121412A1 (de) * 2008-04-03 2009-10-08 Martin Hagel Nutenstanze
CN102784866A (zh) * 2012-08-29 2012-11-21 太仓奥科机械设备有限公司 一种压力机
CN105196588B (zh) * 2015-10-09 2016-09-14 江阴江顺精密机械零部件有限公司 手动压力机
CN105269850B (zh) * 2015-11-11 2017-04-19 南京工程学院 一种复合丝杆驱动装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035514A (en) * 1958-03-07 1962-05-22 Zdarske Strojirny A Slerarny N Flywheel press
US3376728A (en) * 1965-04-05 1968-04-09 Chepos Zd Y Chemickcho A Potra Percussion press
US3595163A (en) * 1968-08-29 1971-07-27 Hiller & Lutz Fa Fly press
US3640210A (en) * 1969-07-18 1972-02-08 Otto Georg Multiple-screw fly press
US3842652A (en) * 1971-12-28 1974-10-22 Nippon Steel Corp Screw press
US4064733A (en) * 1976-10-05 1977-12-27 Anatoly Sergeevich Grigorenko Press
US4417864A (en) * 1980-05-21 1983-11-29 Mitsuishi Fukai Tekkosho, Ltd. Vacuum type brick forming machine
US4606217A (en) * 1983-12-22 1986-08-19 Eumuco Aktiengesellschaft Fur Maschinenbau Screw press having a shifting coupling and a continuously rotating flywheel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE193208C (it) *
DE229344C (it) *
GB931592A (en) * 1960-02-10 1963-07-17 Geo H Hughes Ltd Improvements in or connected with fly presses
FR1343764A (fr) * 1962-10-13 1963-11-22 Perfectionnements aux presses à volant d'inertie
DE1627910A1 (de) * 1967-01-05 1970-07-09 Hiller & Lutz Spindelpresse
GB1196973A (en) * 1967-07-25 1970-07-01 Otto Georg Screw Presses
GB1208860A (en) * 1967-08-01 1970-10-14 Otto Georg Improvements in or relating to forming machines
US3654799A (en) * 1969-03-01 1972-04-11 Becorit Grubenausbau Gmbh Press assembly
GB1256410A (en) * 1969-07-17 1971-12-08 Otto Georg Multiple-screw fly press

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035514A (en) * 1958-03-07 1962-05-22 Zdarske Strojirny A Slerarny N Flywheel press
US3376728A (en) * 1965-04-05 1968-04-09 Chepos Zd Y Chemickcho A Potra Percussion press
US3595163A (en) * 1968-08-29 1971-07-27 Hiller & Lutz Fa Fly press
US3640210A (en) * 1969-07-18 1972-02-08 Otto Georg Multiple-screw fly press
US3842652A (en) * 1971-12-28 1974-10-22 Nippon Steel Corp Screw press
US4064733A (en) * 1976-10-05 1977-12-27 Anatoly Sergeevich Grigorenko Press
US4417864A (en) * 1980-05-21 1983-11-29 Mitsuishi Fukai Tekkosho, Ltd. Vacuum type brick forming machine
US4606217A (en) * 1983-12-22 1986-08-19 Eumuco Aktiengesellschaft Fur Maschinenbau Screw press having a shifting coupling and a continuously rotating flywheel

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239212B (en) * 1989-12-22 1994-07-13 Ngai Shing Dev Limited Press
US6520077B1 (en) * 1999-03-31 2003-02-18 Aida Engineering Co., Ltd. Screw press
US6640601B2 (en) * 2000-12-27 2003-11-04 Sanyo Machine America Corporation Electric hemming press
US20040020379A1 (en) * 2002-08-01 2004-02-05 Balasu Mircea G. High capacity mechanical drive arrangement
US7082809B2 (en) * 2002-08-01 2006-08-01 Beaver Aerospace & Defense, Inc. High capacity mechanical drive arrangement
WO2005005132A1 (fr) * 2003-07-10 2005-01-20 Shanghai Yunliang Forging Press Co., Ltd Presse a vis hydraulique
US20060283229A1 (en) * 2003-12-03 2006-12-21 Shoji Futamura Press
US7574891B2 (en) * 2003-12-03 2009-08-18 Hoden Seimitsu Kako Kenkyusho Co., Ltd. Press
US20080264015A1 (en) * 2007-04-30 2008-10-30 Samsung Gwangju Electronics Co., Ltd Dust compressing apparatus of vacuum cleaner
CN105365246A (zh) * 2014-08-12 2016-03-02 张伟 电动螺旋压力机的同步传动机构
US20180290201A1 (en) * 2015-10-06 2018-10-11 Langenstein & Schemann Gmbh Shaping Device, in Particular a Spindle Press, and Method for Shaping Workpieces
US10967418B2 (en) * 2015-10-06 2021-04-06 Langenstein & Schemann Gmbh Shaping device, in particular a spindle press, and method for shaping workpieces
US11090894B2 (en) * 2015-11-16 2021-08-17 United Arab Emirates University Metal chips compactor
PL441654A1 (pl) * 2022-07-05 2024-01-08 Politechnika Łódzka Prasa śrubowa

Also Published As

Publication number Publication date
KR940001028B1 (ko) 1994-02-08
IT1197795B (it) 1988-12-06
GB8900069D0 (en) 1989-03-01
KR870001932A (ko) 1987-03-28
GB2211784A (en) 1989-07-12
GB2180192B (en) 1989-12-28
IT8621343A0 (it) 1986-07-31
GB8619069D0 (en) 1986-09-17
IT8621343A1 (it) 1988-01-31
DE3626455A1 (de) 1987-02-12
CN86104966A (zh) 1987-02-04
BR8603707A (pt) 1987-03-10
GB2180192A (en) 1987-03-25
CH671729A5 (it) 1989-09-29

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